【Key words】 satellite communication； high rate digital modulator； QPSK； shaped filter； parallel algorithms；
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通过引入成型滤波器，采用EKF，提高了状态估计的精度，实现对随机海浪扰动力和力矩的估计。
By using the forming filter and EKF, the precision of states estimation is increased and a effective estimation of stochastic sea interference is performed.
本文首先对心理声学模型、滤波器组、量化和比特分配、预测编码、时域噪声成型等技术进行研究。
In this dissertation, psychoacoustic models filter Banks quantization and bit allocation predicate coding and temporary noise shaping is analyzed.
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